| A | B |
|---|
| Adaptations for growth curve | life is different @ different points along curve (exponential phase- r strategy) |
| Habitat | resources are plentiful, density dependent factor minimal, rapid pop'l expansion |
| Adaptations | high pop'l growth rate"r", lots of kids per litter (clutch), early maturity, polygyny likely |
| Consequences | short-life span, death rate soars when near K, pop'l cycles |
| Example of adaptations for growth curve "r" | lemmings & white tailed deer & mule deer |
| Lemmings | increase phase 1: females pregnant @ 20 days, have winter breeding in burrows under ice |
| Lemming "r" strategy | during peak and decline phase(2-3), only one litter per summer, individuals grow to 20-50% larger than increase phase |
| Lemmings disperse | during increase phase. most dispersers are small, sexual immature |
